1165559241 has 24 divisors (see below), whose sum is σ = 1952235712. Its totient is φ = 605484000.

The previous prime is 1165559233. The next prime is 1165559243. The reversal of 1165559241 is 1429555611.

It is not a de Polignac number, because 1165559241 - 2³ = 1165559233 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165559241.

It is not an unprimeable number, because it can be changed into a prime (1165559243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226810 + ... + 231891.

Almost surely, 2^1165559241 is an apocalyptic number.

1165559241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1165559241 is a deficient number, since it is larger than the sum of its proper divisors (786676471).

1165559241 is a wasteful number, since it uses less digits than its factorization.

1165559241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458733 (or 458722 counting only the distinct ones).

The product of its digits is 54000, while the sum is 39.

The square root of 1165559241 is about 34140.2876525667. The cubic root of 1165559241 is about 1052.3934037454.

The spelling of 1165559241 in words is "one billion, one hundred sixty-five million, five hundred fifty-nine thousand, two hundred forty-one".